IBM eserver 630 6C4, Руководство по обслуживанию

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MAP 1520: Power
Notes:
1. This is not a start-of-call MAP. Use this Power MAP only if you have been directed
here from another MAP, an SRN in the RS/6000
Eserver
pSeries Diagnostic
Information for Multiple Bus Systems, or an error code.
2. This procedure is used to locate power problems in system units. If a problem is
detected, this procedure helps you isolate the problem to a failing unit.
3. The pSeries 630 Model 6C4 and Model 6E4 can accommodate two power supplies
installed with separate power receptacles on the rear of the power supply. There are
three LEDs located on the front and top of the power supply:
v
AC Good LED (green)
v
DC Good LED (green)
v
Power Supply Fault Indicator LED (amber)
The LEDs indicate the condition of the power supply. The meaning of each LED and
the conditions which light them are explained in this chapter beginning with “Step
1520-1” on page 92.
4. The condition of two power supplies present, but only one working, can be
determined by the service processor and a warning level EPOW.
5. Observe the following safety notices during service procedures.
DANGER
An electrical outlet that is not correctly wired could place hazardous voltage
on metal parts of the system or the devices that attach to the system. It is the
responsibility of the customer to ensure that the outlet is correctly wired and
grounded to prevent an electrical shock.
Before installing or removing signal cables, ensure that the power cables for
the system unit and all attached devices are unplugged.
When adding or removing any additional devices to or from the system,
ensure that the power cables for those devices are unplugged before the
signal cables are connected. If possible, disconnect all power cables from the
existing system before you add a device.
Use one hand, when possible, to connect or disconnect signal cables to
prevent a possible shock from touching two surfaces with different electrical
potentials.
During an electrical storm, do not connect cables for display stations, printers,
telephones, or station protectors for communications lines.
D05
Chapter 3. Maintenance Analysis Procedures (MAPs)
91